karma.conf.js

/**
 * Copyright 2017 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *     http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

module.exports = function(config) {
  const configuration = {
    basePath: "",
    frameworks: ["mocha", "chai", "karma-typescript"],
    preprocessors: {
      "**/*.ts": "karma-typescript", // *.tsx for React Jsx
      "**/*.tsx": "karma-typescript" // *.tsx for React Jsx
    },
    files: [
      {
        pattern: "dist/**/*.@(mjs|js)",
        included: false
      },
      {
        pattern: "src/*.ts",
        type: "js"
      },
      {
        pattern: "tests/*.ts",
        type: "js"
      },
      {
        pattern: "tests/*.tsx",
        type: "js"
      }
    ],
    reporters: ["coverage", "karma-typescript"],
    browsers: (() => {
      if (process.env.BROWSER) {
        return [process.env.BROWSER];
      }
      return ["ChromeHeadless"];
    })(),
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    singleRun: true,
    concurrency: Infinity,

    karmaTypescriptConfig: {
      tsconfig: "./tsconfig.json",
      compilerOptions: {
        module: "commonjs",
        target: "ES5"
      }
    }
  };

  config.set(configuration);
};